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DIY LCR ESR PWM Graphics Version Transistor Tester + Matching Case Kit
This is a more intelligent than the multimeter measuring instruments£¬ signal generators£¬capacitor ESR measurement signal generator£¬ frequency counter£¬ PWM pulse width (this featureneeds add a small amount of components) and other utility functions. Feature: Power supply voltage: DC 5.5-12V. Working Current: 13mA @ 9V. PCB Size: 80 x 80 mm. Main Function: 1. One key measurement operation£¬ auto power off delay. Shutdown current is only 20nA£¬ support for battery operation. 2: Automatic detection of PNP and NPN bipolar transistor£¬ N£¬ P-channel MOSFET£¬ JFET field effect transistors£¬ diodes£¬ two diodes£¬ thyristors£¬ resistors£¬ capacitors£¬ inductors. Automatic detection of current amplification factor (B) Pin Definitions and turn-on voltage of the transistor and the emitter junction (Uf)£¬ Darlington transistor through a high threshold voltage and high current gain recognition. 3: Can detect bipolar transistors and MOSFET internal protection diode and displayed on the screen. It can be measured threshold voltage and the gate capacitance of the MOSFET. 4: Support two resistance measurements£¬ the potential can also be measured. The highest resolution is 0.1 ohm resistance measurements£¬ the highest measured value of 50M Euro. 5: Capacitance measurement range from 25pf to 100mF (10 UF). Resolution up to 1 pF. 0.09UF capacitance can be detected above the equivalent series resistance (ESR)£¬ a resolution of 0.01 ohms. To display the value of the capacitor voltage loss and increase the capacitance of a separate line ESR measurements£¬ available online (on the circuit) direct measurement capacitor value and ESR£¬ easy maintenance and troubleshooting capacitance. 6. Inductance measurement range of 0.01MH-20H£¬ otherwise it will be displayed as resistance£¬ if the inductor DC resistance higher than 2100 will be displayed as the European resistance. 7. Can two diode display symbols in the right direction£¬ displaying the forward voltage drop. LED detected as a diode forward voltage drop higher than normal. Dual LEDs detected as double diode. Simultaneous detection LED flashes£¬ very intuitive. 8. Each test of time is about two seconds£¬ only the large capacitance and high inductance measurements will take a long time. Additional Feature: 1. The square wave signal generator£¬ optional built-in within the range of 1HZ-2MHZ stall square wave signal; 2.PWM pulse signal generator for 1-99% of the pulse width modulated signal; 3. The frequency meter function£¬ can test 1HZ-25KHZ or higher frequency signal (in this case a slight decrease in accuracy).